31. One crossover appears to reduce the possibility of another one in its neighbourhood. This phenomenon is referred to as
32. Which one among the following is not correct about Down's syndrome?
33. The sterilizing agents for callus cultures include
34. Energy for the creation of first organic compounds was probably provided by
35. Abiogenesis means
36. The kind of polyploid usually arising by crossing between organisms of different ploidy level is known as
37. As the loss of a fragment results in deletion of genes, inversions are sometimes referred to as
38. Which of the following factors resulted in the phenomenon called struggle for existence?
39. Which of the following features of DNA make if unequally suited to store and transmit genetic information from generation to generation?
40. The protein chain elongation factors in prokaryotes are
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